"Then again ...," to a texter

• From a different perspective, in chat-room speak
• "Looking at it a different way," in texts
• "However," on screens
• "But let's consider," initially
• Texting alternative?
• "However," in textspeak
• "Alternatively," in a tweet
• However, in a text
• "However," in tweets

Wiktionary Word definitions in Wiktionary
init. (alternative case form of OTOH English)